Paul P Russo

US Patent:

40902382, May 16, 1978

Filed:

Oct 4, 1976

Appl. No.:

5/729348

Inventors:

Paul Michael Russo - Princeton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

G06F 918
G06F 1300

US Classification:

364200

Abstract:

Circuit for receiving service request signals from peripheral devices in a computer system and providing an address to the computer to effect a program transfer to an appropriate service subroutine. An interrupt request signal is generated to cause the computer to jump to a subroutine. A DMA (direct memory access) request is used to store the address at which the proper subroutine is stored. The proper subroutine depends on the highest priority device supplying a service request signal and on the status of that device. Provision is also made for storing a double-length address.

US Patent:

43847633, May 24, 1983

Filed:

Aug 26, 1980

Appl. No.:

6/181424

Inventors:

Paul M. Russo - Princeton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

G02F 113

US Classification:

350335

Abstract:

A liquid crystal device (LCD) for displaying a dot matrix is formed of a pair of LCD's in back-to-back relation. Conductive bar pattern coatings are provided on each of the LCD's. Each LCD pattern is orthogonally oriented to the pattern of the other LCD to define thereby a dot matrix in a row and column array. The electrically conducting patterns are energized with control signals to activate the liquid crystal compositions in the respective LCD's to transmit light through two spatially superposed vertical dots to provide a display of dots in accordance with the selected energization signals.

US Patent:

43153143, Feb 9, 1982

Filed:

Dec 19, 1979

Appl. No.:

6/105121

Inventors:

Paul M. Russo - Princeton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

G06F 942

US Classification:

364200

Abstract:

In a computer system, a struture uses a method for rapidly accessing and executing a sub-routine selected in response to a service request from an external source. The system provides a storage unit containing the addresses of the sub-routines called for by the service requests, with the addresses of the sub-routine being identified by the received service requests. Also provided is a register containing the address of a given instruction and control logic responsive to a received service request to enable the register to become the main program counter and thereby point to the given instruction. The control logic responds to the given instruction to alter the contents of the register to a predetermined value. A decoder responds to the altered contents of the register to concurrently disable the main memory of the system and to enable the storage unit which then supplies the address of the selected sub-routine to the control logic while the main memory is disabled. The control logic then loads the requested sub-routine address into the register which acts as the program counter for the execution of the selected sub-routine.

US Patent:

41491521, Apr 10, 1979

Filed:

Dec 27, 1977

Appl. No.:

5/864764

Inventors:

Paul M. Russo - Princeton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

G06K 1520

US Classification:

340703

Abstract:

Circuit for controlling the color of dot elements in a raster scan display. A data memory stores the state (on or off) of dot elements which are mapped onto the raster scan display. At least one smaller auxiliary memory is provided to store one set of color information specifying the color of a plurality of contiguous dot elements when the dot states have one value and another set of color information specifying the color of the plurality of contiguous dot elements when the dot states have the other value. There is also a selectable background color circuit for controlling the color outside an active display area.

US Patent:

39835715, Sep 28, 1976

Filed:

Jun 30, 1975

Appl. No.:

5/591952

Inventors:

Paul Michael Russo - Princeton NJ

Assignee:

RCA Corporation - New York NY

International Classification:

G03B 1724

US Classification:

354105

Abstract:

Counter with display devices for exhibiting successive identifiers in response to a change in ambient light such as used in reproducing an image. Each change in ambient light, such as the flash in a photocopying machine or flashbulbs in a camera, increments a counter which is coupled to display devices, which are disposed between the image to be reproduced and the image reproducing means, and which display an identifier corresponding to the number in the counter.